So many composition dolls are unmarked. Here
are some doll marks or numbers on composition dolls made between
1899 - 1950s, that may help identify your doll. The early composition doll's are made from glue, glycerin,
zinc oxide and Japanese wax, it is a heavy, dense material, the coloring
can be almost white, gray or brown. Each manufacturer kept their
exact "recipe" a secret. When the doll dried, it often was
dipped into a pink tinted glue composition which was a thin layer (but
not all dolls have this). Then the doll was airbrushed
with oil paint.

By 1916 or so the manufacturers began using
ground-up sawdust, also called "wood flour", which made a
much lighter doll. Now a "hot press method" could be
used and the dolls dried even quicker, so production of the dolls was
increased.